Ariz. veterinarians see increase in canine marijuana toxicity

An uptick in marijuana toxicity in dogs in Arizona has accompanied the opening of medical marijuana dispensaries in the state, with veterinarians reporting nearly double the rate of marijuana ingestion in pets since then. Veterinarian Billy Griswold of North Scottsdale's Emergency Animal Clinic says that organization's five hospitals treat at least 24 marijuana ingestion cases per month. Synthetic marijuana is more toxic for pets than the natural form, according to Dr. Griswold, who said the side effects are more serious and the treatment takes longer.